cookie的设置

api详解释

// SetCookie adds a Set-Cookie header to the ResponseWriter's headers.
// The provided cookie must have a valid Name. Invalid cookies may be
// silently dropped.
func (c *Context) SetCookie(name, value string, maxAge int, path, domain string, secure, httpOnly bool) {
    if path == "" {
        path = "/"
    }
    http.SetCookie(c.Writer, &http.Cookie{
        Name:     name,
        Value:    url.QueryEscape(value),
        MaxAge:   maxAge,
        Path:     path,
        Domain:   domain,
        SameSite: c.sameSite,
        Secure:   secure,
        HttpOnly: httpOnly,
    })
}

    // 设置cookie
    r.GET("/login", func(c *gin.Context) {
        c.SetCookie("token", "123456", 60*60*24*30, "/", "localhost", false, true)
        c.JSON(200, gin.H{
            "message": "登录成功",
            "code":    200,
        })
    })

    // 清除cookie
    r.GET("/logout", func(c *gin.Context) {
        c.SetCookie("token", "", -1, "/", "localhost", false, true)
        c.JSON(200, gin.H{
            "message": "退出登录成功",
            "code":    200,
        })
    })

    // 获取cookie
    r.GET("/", func(c *gin.Context) {
        token, err := c.Cookie("token")
        if err != nil {
            c.JSON(401, gin.H{
                "message": "未登录",
                "code":    401,
            })
        }
        c.JSON(200, gin.H{
            "message": "已登录",
            "code":    200,
            "token":   token,
        })
    })